Electric heating device.



MCGERRY ALLMAYER. ELECTRIC HEATING DEVlCE.

APPLICATION FILED ocT. 9', 19H.

Patented Apr'. 6, 1915;

2 SHEETS-SHEET 1.

MCGEHRY ALLMAYER.

ELECTRIC HEATING DEVICE.

APPLICATION FILED ocT.9,1911.

1,134,661. Patented Apr.6, 1915.

2 SHEETS-salama.

MCGERRY ALLMAYER, 0F CHICGO, ILLINOIS.

ELECTRIC HEATING DEVICE.

Specification of Letters Patent.

Patented Apr. 6, 1915.

Application filed October 9, 1911. Serial No. 653,496.

To all whom it may concern Be it known that I, MCGERRY ALLMAYER, f

a citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Electric Heating Devices, of which the following is aspeciication. I

My invention relates to improvements in coffee and tea pots-and hasespecial reference to devices of this character, wherein away portion insection, of the upper por g tion of the containing', vessel showing thethe liquid is heated by means thermically responsive to the passage ofan electric current.

One of the objects of my invention is to provide a device of thecharacter described, which is simple in construction, eiiicient inoperation and durablein service.

Other and further objects of my invention will become readily apparentto persons skilled in the art from a consideration of the followingdescription taken in conjunction with the drawings, wherein;

Figure 1 is a vertical, central section of the assembled device. Fig. 2isy a broken manner of retaining the closure thereof in place. Fig. 3 isa central vertical section of a portion of the heating element; F ig. 4:is a view looking toward the bottom of the heating element with thecoffee containing cup in place.

In all of the views the same reference characters are employed toindicate similar parts.

The liquid containing receptacle, 5, may be made ot' glass, with a lip6, and in the shape of a pitcher with ay handle 7, or it may be asimpler container made of metal or other liquid holding material,although for several reasons I prefer to use a glass receptacle.

A cover or closure, 8, is preferably made of sheet metal, yand isflanged as at 9, to

- properly lie within the opening'of the vessel 5. It is provided with alip covering part, 10, to completely overlie and close the openingprovided by the lip 6. It is centrally perforated as at 1 1 forinsertion of the heating element. Tongues 12 are outturned against theinner sides of the receptacle 5 to prevent thewclosure 8 from fallingfrom place. The' tongues are inserted, one after the'other, through theopening provided by the lip 6 and the closure is rotated as the tonguesare entered.

The heating element 14 is provided with a central core 15, of somerefractory, heatresisting material, such as burnt clay, kaolin, or thelike. It is wound with one layer of heating wire 16, then the layer iscovered with a pasty compound 17, of heat-resisting and electricallyinsulating nature, which dries upon application of heat, and anotherllayer of fwire is wound thereupon andmore of the insulation is appliedin alternating layers until sufficient wire has been thus superposedupon the support 15 to produce the desired temperature consistent withthe difference of potential of the circuit upon which the device is tobe used. Finally a layer of insulating material should be applied overthe last layer of wire, and the de-e vice thus made should be slippedinto' a closed-end covering jacket, or tube 18, which is, preferably,screw threaded at its u per or open end, as at 19. The terminals o thewire 16, are connected to an attaching socket, 20, and the latter isscrewed on to the end of the tube 18.- A detachable plug 21, connectedtoa exible cord 22, makes electrical contact with the terminals to whichthe wirev 16 is connected in the socket 20, and thus the heating elementis connected with a circuit leading to a source ofelectric'energy.

A coffee holding cup, 23, is made of perforate sheet metal and is,preferably, pro- Y vided with a central imperforate tube 24, somewhatlarger indiameter than the heating element lll, to leave therebetweensuiiicient room for movementof liquid, which movement is superinduced bythe heat evolvedv froml the heater 14. The upper end of the tube 24projects above the cover 25, and is provided on opposite sides withbayonet joint supporting slots 26S-26, that have locking engagement withradially projecting pins 27 from the tube 18. By this means they coifeecontaining cup is securely sup ported on the heating element and fromwhich it may be quickly removed.

IVhen the surrounding water is heated by the heater 14, the water incontact with the surface thereof rises rapidly and water far therremoved Atherefrom as rapidly falls, thus causing a-rapid circulation.of water through the contents of the cup 23 andas rapidly extractingthe soluble contents;

While I have herein describedva single rno embodiment of my invention,it is obvious that changes therein may be made Without departing fromthe spirit and scope o the appended claims.

What I claim is: Y

1. In a heating device, the combination with a utensil of a relativelylong, electricallyheating, inclosed element, an a food containing cupsurrounding a portion thereof and supported in said utensil.

2. In al heatingvdevice, the combination of a relatively long,electrically heating element, and a perforate food containing-cupoverlying a central imperforate tube surrounding a portion of saidheating element.

3. In aheating device, the combination of a relativelylonigt'electrically heating ele ment, a perforateV ood-containingremovab e cup surrounding a portion thereof, and means carried by saidelement for supporting said cup.

4. In a heating device, the combination of a relatively long,electrically heating element, a food-containing cup having perforate topand bottom Walls surrounding said element, means Jfor supporting saidcup and said element in vertical positions.

5. In a heating device, the combination of an open-top liquid-containingvessel, a

removable, perforate cover therefor, a relatively long, electricallyheating element supported by said cover, a terminal socket secured tothe upper end of said element, and a food cup removably supported aboutsaid heating element.

6. In a heating device, a heating element, a relatively long, closedtube covering said element, a terminal socket secured to said tube towhich said element is electrically connected, a food cup removablysupported on said tube, and means carried by said tube to support saidcup.

7. In a heating device, the combination of a liquid containing vessel, arelatively long, electric, heat-producing element; a perforate food cupsupported about said element and an imperforate spacedY apart tubebetween said cup and element terminating above the top of said cupwhereby to cause lheated liquid to pass into said cup from saidimperforate tube.

In testimony whereof I hereunto set my hand in the presence of tivoWitnesses.

Mc-GERRY ALLMAYER.

In the presence of-' Y MARY F. ,il/innen,

W. LINN/ ALLEN.-

